JPS6238959U

JPS6238959U -

Info

Publication number: JPS6238959U
Application number: JP1985127832U
Authority: JP
Priority date: 1985-08-23
Filing date: 1985-08-23
Publication date: 1987-03-07

Description

[Brief explanation of the drawing]

第１図乃至第１８図は、本考案の実施例を示し
たもので、第１図は部分断面図、第２図は施錠機
構の横断面図、第３図は取付筒の断面図、第４図
は同上の平面図、第５図は同上の底面図、第６図
は施錠筒の平面図、第７図は同上の正面図、第８
図は同上の底面図、第９図はカム板部材の平面図
、第１０図は第９図におけるカム面の展開図、第
１１図は同上の断面図、第１２図は同上の横断面
図、第１３図はケーシングの平面図、第１４図は
同上の断面図、第１５図又は第１６図はキーを縮
小した状態をしめした正面図と底面図、第１７図
と第１８図は回動具の切欠き正面図と底面図、第
１９図は本考案の他の実施例を示した部分断面図
である。１……マンホール用蓋、３……支受枠材、４…
…係合部、５……ケーシング、６……カム板部材
、８……施錠機構、１２……キー。 1 to 18 show an embodiment of the present invention, in which FIG. 1 is a partial sectional view, FIG. 2 is a cross-sectional view of the locking mechanism, FIG. 3 is a sectional view of the mounting tube, and FIG. Figure 4 is a plan view of the same as the above, Figure 5 is a bottom view of the same as the above, Figure 6 is a plan view of the lock cylinder, Figure 7 is a front view of the same as the above, and Figure 8 is the same as the above.
The figure is a bottom view of the same as above, Fig. 9 is a plan view of the cam plate member, Fig. 10 is a developed view of the cam surface in Fig. 9, Fig. 11 is a sectional view of the same as above, and Fig. 12 is a cross-sectional view of the same as above. , Fig. 13 is a plan view of the casing, Fig. 14 is a sectional view of the same as above, Fig. 15 or 16 is a front view and bottom view showing the key in a reduced state, and Figs. 17 and 18 are rotational views. A cutaway front view and a bottom view of the moving tool, and FIG. 19 are partial sectional views showing another embodiment of the present invention. 1... Manhole cover, 3... Support frame material, 4...
...Engaging portion, 5...Casing, 6...Cam plate member, 8...Lock mechanism, 12...Key.

Claims

[Scope of utility model registration request]

An engaging part is fixed to the inner circumferential surface of a support frame material that supports the manhole cover, and a cam plate member is rotatably housed in a casing placed at the outer circumferential position of the bottom surface of the cover. A cam surface formed on a part of the plate member is provided so as to be able to be tightened and fixed by engaging with the above-mentioned engaging portion, and a locking mechanism is provided on the above-mentioned lid so that it can be freely entered and exited from the upper surface of the position where the cam plate member is provided. 1. A fixing device for a manhole cover, characterized in that the lower part of the locking mechanism is locked to a cam plate member, and the locking mechanism is configured to be removable from the upper surface of the lid via a key.